研究目的
To fabricate CdS/g-C3N4 nanocomposites via an in-situ hydrothermal method for enhanced photocatalytic water splitting to produce hydrogen.
研究成果
The in-situ hydrothermal method successfully fabricated CdS/g-C3N4 nanocomposites, with the 10 wt% CdS composition showing the highest photocatalytic H2 evolution rate of 216.48 μmol h-1 g-1, which is 4 times higher than pure CdS and 21 times higher than pure g-C3N4. This enhancement is due to improved charge separation and increased surface area. The method provides a facile strategy for developing efficient photocatalysts for hydrogen production.
研究不足
The paper does not explicitly mention specific limitations, but potential areas for optimization could include scaling up the synthesis for industrial applications, further improving photostability under long-term irradiation, and exploring other material combinations for enhanced efficiency.
1：Experimental Design and Method Selection:
An in-situ hydrothermal synthesis method was used to prepare CdS/g-C3N4 nanocomposites with varying weight percentages of CdS. The method involves using water as a solvent and a Teflon-lined stainless steel autoclave for the reaction.
2：Sample Selection and Data Sources:
g-C3N4 was synthesized by heating thiourea at 550°C for 4 hours under Ar atmosphere, followed by acidification with 5 M HNO3 and purification with pure water. CdS/g-C3N4 nanocomposites were made by dispersing cadmium chloride, thiourea, and g-C3N4 in deionized water and reacting at 160°C for 4 hours.
3：List of Experimental Equipment and Materials:
Equipment includes a Teflon-lined stainless steel autoclave, materials include cadmium chloride, thiourea, g-C3N4, deionized water, and 5 M HNO
4：Experimental Procedures and Operational Workflow:
The mixture was transferred to the autoclave, reacted, and the precipitates were rinsed with deionized water and dried.
5：Data Analysis Methods:
Characterization techniques included TEM, HRTEM, EDX, XPS, BET surface area measurement, UV-Vis spectroscopy, PL spectroscopy, EIS, and transient photocurrent tests to analyze the nanocomposites and their photocatalytic performance.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
